Answer
$12x^{3}y+8x+8$
Work Step by Step
We are asked to add $(7x^{3}y-4xy+8)+(5x^{3}y+4xy+8x)$. We can combine like terms to add these polynomials together.
$(7x^{3}y+5x^{3}y)+(-4xy+4xy)+8x+8=12x^{3}y+8x+8$
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 5 - Section 5.3 - Polynomials and Polynomial Functions - Exercise Set - Page 279: 41
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